del "G:\xampp\htdocs\qlcb\db\dumpfile\QLCB.DMP"
del "G:\xampp\htdocs\qlcb\db\dumpfile\QLCB.LOG"
EXPDP system/123@HSB directory=BACKUP_QLCB dumpfile = QLCB.DMP logfile= QLCB.LOG schemas= QLCB 